check-qnull.c (1866B)
1 /* 2 * QNull unit-tests. 3 * 4 * Copyright (C) 2016 Red Hat Inc. 5 * 6 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. 7 * See the COPYING.LIB file in the top-level directory. 8 */ 9 #include "qemu/osdep.h" 10 11 #include "qapi/qmp/qnull.h" 12 #include "qapi/qobject-input-visitor.h" 13 #include "qapi/qobject-output-visitor.h" 14 #include "qapi/error.h" 15 16 /* 17 * Public Interface test-cases 18 * 19 * (with some violations to access 'private' data) 20 */ 21 22 static void qnull_ref_test(void) 23 { 24 QObject *obj; 25 26 g_assert(qnull_.base.refcnt == 1); 27 obj = QOBJECT(qnull()); 28 g_assert(obj); 29 g_assert(obj == QOBJECT(&qnull_)); 30 g_assert(qnull_.base.refcnt == 2); 31 g_assert(qobject_type(obj) == QTYPE_QNULL); 32 qobject_unref(obj); 33 g_assert(qnull_.base.refcnt == 1); 34 } 35 36 static void qnull_visit_test(void) 37 { 38 QObject *obj; 39 Visitor *v; 40 QNull *null; 41 42 /* 43 * Most tests of interactions between QObject and visitors are in 44 * test-qmp-*-visitor; but these tests live here because they 45 * depend on layering violations to check qnull_ refcnt. 46 */ 47 48 g_assert(qnull_.base.refcnt == 1); 49 obj = QOBJECT(qnull()); 50 v = qobject_input_visitor_new(obj); 51 qobject_unref(obj); 52 visit_type_null(v, NULL, &null, &error_abort); 53 g_assert(obj == QOBJECT(&qnull_)); 54 qobject_unref(null); 55 visit_free(v); 56 57 null = NULL; 58 v = qobject_output_visitor_new(&obj); 59 visit_type_null(v, NULL, &null, &error_abort); 60 visit_complete(v, &obj); 61 g_assert(obj == QOBJECT(&qnull_)); 62 qobject_unref(null); 63 qobject_unref(obj); 64 visit_free(v); 65 66 g_assert(qnull_.base.refcnt == 1); 67 } 68 69 int main(int argc, char **argv) 70 { 71 g_test_init(&argc, &argv, NULL); 72 73 g_test_add_func("/public/qnull_ref", qnull_ref_test); 74 g_test_add_func("/public/qnull_visit", qnull_visit_test); 75 76 return g_test_run(); 77 }